My 75 year old mother was diagnosed with cancer
of the colon. After surgery the findings were that there was no metastase, no
lymphnode involvement, and clear margins of the section. Microscopic tests
revealed the presence of 'signet ring cells'.

Her doctors (in Spain) seem to believe these
cells to be very agressive and warrant chemotherapy asap.

Can anybody tell me anything about these
cells???? Are they indeed very agressive and what is the treatment followed in
North America???